pimp: recruits girls through emotional vulnerabilities, screws her, says he loves her, hooks her on drugs, slaps her around, takes most of her money.
agent: recruits girls who want to do the work through published ads, does not screw her, teaches her the business, photographs her, develops her persona, creates her web site, develops her brand and marketing strategy, writes her publicity releases, advises on client interactions, teaches her advanced sexual and psychological techniques, drives her to outcalls, arranges incalls, mentors her by providing intellectual and emotional support, takes less than half of her money. Takes less of her money as time goes on and she becomes more independent, finally helping her to leave the business and launch her own ventures in the regular economy.
Pimps are scum, agents have nothing to be ashamed of.